A temporary assembled guardrail for the reconstruction, expansion, elevation and widening of a bridge

Abstract

The present invention provides a temporary assembled guardrail for the reconstruction, expansion, elevation and widening of a bridge, comprising a pre-embedded anchor, an assembled column, a cross-connecting pipe, an anti-collision casing, a bridge deck cast-in-place layer template, fixing bolts I, II, III and IV, wherein the pre-embedded anchor is fixed on the top flange of the beam, the bottom of the assembled column and the pre-embedded anchor are fixedly connected by fixing bolts III, the cross-connecting pipe is arranged between two adjacent assembled columns and fixed by fixing bolts IV, the anti-collision casing is arranged in the middle of the side of the assembled column close to the bridge deck and fixedly connected by fixing bolts I, and the bridge deck cast-in-place layer template is fixedly arranged at the bottom of the side of the assembled column close to the bridge deck by fixing bolts II. The present invention adopts a fully assembled structure, which is convenient for installation and disassembly, is conducive to reducing the use of large machinery, reducing the impact on road traffic, reducing the workload of re-formwork, facilitating the subsequent bridge deck splicing, and can be recycled and reused, saving costs.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge widening construction, and in particular relates to an assembled temporary guardrail for a modified, expanded, elevated and widened bridge. Background Art

[0002] At present, with the continuous acceleration of my country's overall development process, the traffic volume of expressways has continued to increase. The traffic volume has greatly exceeded the original construction expectations, and the traffic level of expressways has also decreased, which cannot meet the needs of my country's highway development. Therefore, in the past decade, my country has begun to implement large-scale expressway reconstruction and expansion projects. When the bridge is raised for reconstruction and expansion, since the widening bridge is higher than the original bridge elevation, a temporary guardrail needs to be set up on the inside of the widening bridge. The installation and removal of concrete guardrails in the existing technology are difficult, and after removal, a large amount of construction waste is generated, which increases the cost of waste disposal and environmental pressure, and the fixing of concrete guardrails to the beam body is inconvenient, which affects the construction progress. Summary of the invention

[0003] The invention provides an assembled temporary guardrail for the reconstruction, expansion, elevation and widening of a bridge, which is easy to install and dismantle, can be reused, has high efficiency, low cost and good economy.

[0004] The technical solution of the present invention is: an assembled temporary guardrail for the reconstruction, expansion, elevation and widening of a bridge, comprising embedded anchors, assembled columns, cross-connecting pipes, anti-collision casings, cast-in-place formwork for a bridge deck, fixing bolts I, fixing bolts II, fixing bolts III and fixing bolts IV, wherein the embedded anchors are fixed on the top flange of the beam, the bottom of the assembled columns and the embedded anchors are fixedly connected by fixing bolts III, the cross-connecting pipes are arranged between two adjacent assembled columns and fixed by fixing bolts IV, the anti-collision casings are arranged in the middle of the side of the assembled column close to the bridge deck and fixedly connected by fixing bolts I, and the cast-in-place formwork for the bridge deck is fixedly arranged at the bottom of the side of the assembled column close to the bridge deck by fixing bolts II.

[0005] Preferably, the embedded anchor comprises an anchor plate, a plurality of connection holes, and sleeves having the same number and size as the connection holes, the connection holes are evenly arranged on the anchor plate, the sleeves extend downward through the connection holes, and the sleeves are provided with internal threads.

[0006] Preferably, the number of the connection holes on each anchor plate is at least 4.

[0007] Preferably, the assembled column includes a column body, a connecting plate arranged in the middle of the column body, and a bottom plate arranged at the bottom of the column body. The column body is an H-shaped structure composed of a horizontal plate and two longitudinal plates. The connecting plate is provided with a mounting hole I, and the bottom plate is provided with a mounting hole II. The mounting holes II correspond to the number and position of the connecting holes. The fixing bolts III pass through the mounting holes II and the sleeve in sequence to fix the assembled column and the embedded anchor. The middle of the bottom plate is provided with a mounting plate, and the mounting hole III is provided on the mounting plate. The bottom of the longitudinal plate of the column body close to the bridge deck is provided with a mounting hole IV, and the middle of the longitudinal plate of the column body close to the bridge deck is provided with a bolt mounting hole II.

[0008] Preferably, the number of the mounting holes IV of the same assembly column is 2.

[0009] Preferably, three connecting plates are provided on both sides of the transverse plate of the assembled columns, and the number of transverse connecting pipes between two adjacent assembled columns is three.

[0010] Preferably, the cross-connecting pipe includes a cross-connecting pipe body, cross-connecting pipe mounting holes arranged transversely at both ends of the cross-connecting pipe body, and bolt mounting holes III arranged vertically at both ends of the cross-connecting pipe body. The two ends of the cross-connecting pipe body are clamped on the connecting plate of the assembled columns through the cross-connecting pipe mounting holes, and the fixing bolts IV pass through the bolt mounting holes III to fix the cross-connecting pipe and the connecting plate.

[0011] Preferably, the anti-collision shield includes a shield body, a shield connecting plate, and a shield fixing plate. The shield body is an arc-shaped structure, which can reduce impact force and improve anti-collision performance. One end of the shield connecting plate is connected to the shield body, and the shield fixing plate is arranged at the other end of the shield connecting plate. The shield fixing plate and the shield connecting plate are arranged vertically. A plurality of bolt mounting holes IV are provided on the shield fixing plate. The fixing bolts I pass through the bolt mounting holes IV and the bolt mounting holes II to connect and fix the anti-collision shield and the assembled column.

[0012] Preferably, the bridge deck cast-in-place layer template includes template I, template II arranged at both ends of template I, and bolt mounting hole I arranged at the end of template II away from template I. The template I and template II are vertically arranged, and the template II passes through the mounting hole IV on the two adjacent assembled columns and is arranged on the side of the mounting plate. The fixing bolt II passes through the mounting hole III and the bolt mounting hole I to fix the bridge deck cast-in-place layer template and the assembled column.

[0013] Preferably, the mounting hole III, the bolt mounting hole I, the mounting hole IV, and the cross-connecting pipe mounting hole are all strip holes.

[0014] Preferably, the mounting hole I is a strip hole or a circular hole, and when it is a strip hole, the spacing between adjacent assembly columns can be adjusted.

[0015] The working principle of the present invention is as follows: the embedded anchor is embedded in the top flange of the beam during the construction of the beam, the assembled column is connected and fixed with the embedded anchor by the fixing bolt III, the cross-connecting pipe is fixed to the assembled column by the fixing bolt IV, the anti-collision casing is fixed to the assembled column by the fixing bolt I, the template II of the cast-in-place layer template of the bridge deck is inserted into the bottom mounting hole IV of the assembled column, and is fixed to the mounting plate at the bottom of the assembled column by the fixing bolt II, the cast-in-place layer template of the bridge deck can adjust the extended length, and can also adjust the spacing between the assembled columns. When there is a difference in the size of the cross-connecting steel pipe, it can also be adapted by adjusting the position of the fixing bolt IV.

[0016] The advantages of the present invention are: the present invention adopts a fully assembled structure, which is easy to install and dismantle. The temporary guardrail used for the reconstruction, expansion and widening of one side of the bridge is conducive to rapid installation and dismantling during construction, reducing the use of large machinery and reducing the impact on road traffic. The integrated bridge deck cast-in-place layer formwork reduces the workload of re-formwork. After the entire guardrail is dismantled, there is no residual component above the bridge deck, which is convenient for the subsequent bridge deck splicing and improves construction efficiency. It has a wide range of applications and can be recycled and reused after dismantling, saving costs and improving economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an assembled temporary guardrail for a bridge for reconstruction, expansion, elevation and widening according to the present invention;

[0018] Figure 2 It is a schematic diagram of the installation of a temporary assembled guardrail for a bridge for reconstruction, expansion, elevation and widening according to the present invention;

[0019] Figure 3 It is a schematic diagram of the structure of a pre-buried anchor piece for a temporary assembled guardrail for a bridge to be expanded, raised and widened according to the present invention;

[0020] Figure 4 It is a schematic diagram of an assembled column structure of an assembled temporary guardrail for a bridge that is expanded, raised and widened according to the present invention;

[0021] Figure 5 It is a schematic diagram of a cast-in-situ template structure of a bridge deck for a temporary assembled guardrail for a bridge to be rebuilt, expanded, raised and widened according to the present invention;

[0022] Figure 6 It is a schematic diagram of a cross-connecting pipe structure of a temporary assembled guardrail for a bridge that is expanded, raised and widened according to the present invention;

[0023] Figure 7 It is a schematic diagram of the anti-collision casing structure of a temporary assembled guardrail for a bridge that is expanded, raised and widened according to the present invention;

[0024] Among them: 1. Embedded anchor, 1-1. Anchor plate, 1-2. Sleeve, 1-3. Connection hole, 2. Bridge deck cast-in-place layer template, 2-1. Template I, 2-2. Template II, 2-3. Bolt installation hole I, 3. Assembled columns, 3-1. Column body, 3-2. Connection plate, 3-3. Installation hole I, 3-4. Bottom plate, 3-5. Installation hole II, 3-6. Installation plate, 3-7. Installation hole III, 3-8. Installation hole IV, 3-9. Bolt installation hole II, 4. Cross-connecting pipe, 4-1. Cross-connecting pipe body, 4-2. Cross-connecting pipe installation hole, 4-3. Bolt installation hole III, 5. Anti-collision casing, 5-1. Casing body, 5-2. Casing connecting plate, 5-3. Casing fixing plate, 5-4. Bolt installation hole IV, 6. Fixing bolt I, 7. Fixing bolt II, 8. Fixing bolt III, 9. Fixing bolt IV. DETAILED DESCRIPTION

[0025] The present invention is described clearly and completely below in conjunction with the accompanying drawings so that those skilled in the art can fully implement the present invention without having to make any creative work.

[0026] The specific implementation mode of the present invention is: Figure 1-7 As shown, a temporary assembled guardrail for the reconstruction, expansion, elevation and widening of a bridge comprises a pre-embedded anchor 1, an assembled column 3, a cross-connecting pipe 4, an anti-collision casing 5, a cast-in-place formwork 2 for a bridge deck, fixing bolts I6, fixing bolts II7, fixing bolts III8 and fixing bolts IV9. The pre-embedded anchor 1 is fixed to the top flange of the beam, the bottom of the assembled column 3 and the embedded anchor 1 are fixedly connected by fixing bolts III8, the cross-connecting pipe 4 is arranged between two adjacent assembled columns 3 and fixed by fixing bolts IV9, the anti-collision casing 5 is arranged in the middle of the side of the assembled column 3 close to the bridge deck and fixedly connected by fixing bolts I6, and the cast-in-place formwork 2 for the bridge deck is fixedly arranged at the bottom of the side of the assembled column 3 close to the bridge deck by fixing bolts II7.

[0027] like Figure 3 As shown, the embedded anchor 1 includes an anchor plate 1-1, a plurality of connecting holes 1-3, and a sleeve 1-2 having the same number and size as the connecting holes 1-3. The connecting holes 1-3 are evenly arranged on the anchor plate 1-1, and the sleeve 1-2 extends downward through the connecting holes 1-1 and is anchored on the top flange of the beam. The sleeve 1-2 is provided with an internal thread, which cooperates with the thread on the fixing bolt III8. The number of the connecting holes 1-3 on each anchor plate 1-1 is at least 4.

[0028] like Figure 4As shown, the assembled column 3 includes a column body 3-1, a connecting plate 3-2 arranged in the middle of the column body 3-1, and a bottom plate 3-4 arranged at the bottom of the column body 3-1. The column body 3-1 is an H-shaped structure composed of a horizontal plate and two longitudinal plates. It can be made of H-shaped steel during preparation. The material is easy to obtain and convenient for maintenance and replacement. The connecting plate 3-2 is provided with a mounting hole I3-3, and the bottom plate 3-4 is provided with a mounting hole II3-5. The mounting holes II3-5 correspond to the number and position of the connecting holes 1-3. The fixing bolts III8 pass through the mounting holes II3-3 in sequence. 5. The sleeve 1-2 fixes and connects the assembled column 3 and the embedded anchor 1. A mounting plate 3-6 is provided in the middle of the bottom plate 3-4. A mounting hole III 3-7 is provided on the mounting plate 3-6. A mounting hole IV 3-8 is provided at the bottom of the longitudinal plate of the column body 3-1 close to the bridge deck. A bolt mounting hole II 3-9 is provided in the middle of the longitudinal plate of the column body 3-1 close to the bridge deck. The number of mounting holes IV 3-8 of the same assembled column 3 is 2. Three connecting plates 3-2 are provided on both sides of the transverse plate of the assembled column 3. The number of cross-connecting pipes 4 between two adjacent assembled columns 3 is 3.

[0029] like Figure 6 As shown, the cross-connecting tube 4 includes a cross-connecting tube body 4-1, cross-connecting tube mounting holes 4-2 arranged transversely at both ends of the cross-connecting tube body 4-1, and bolt mounting holes III4-3 arranged vertically at both ends of the cross-connecting tube body 4-1. The two ends of the cross-connecting tube body 4-1 are clamped on the connecting plate 3-2 of the assembled column 3 through the cross-connecting tube mounting holes 4-2, and the fixing bolts IV9 pass through the bolt mounting holes III4-3 to fix the cross-connecting tube 4 and the connecting plate 3-2.

[0030] like Figure 7 As shown, the anti-collision casing 5 includes a casing body 5-1, a casing connecting plate 5-2, and a casing fixing plate 5-3. The casing body 5-1 is an arc-shaped structure, which can reduce impact force and improve anti-collision performance. One end of the casing connecting plate 5-2 is connected to the casing body 5-1, and the casing fixing plate 5-3 is arranged at the other end of the casing connecting plate 5-2. The casing fixing plate 5-3 and the casing connecting plate 5-2 are vertically arranged. A plurality of bolt mounting holes IV5-4 are provided on the casing fixing plate 5-3. The fixing bolts I6 pass through the bolt mounting holes IV5-4 and the bolt mounting holes II3-9 to connect and fix the anti-collision casing 5 and the assembled column 3.

[0031] like Figure 5As shown, the bridge deck cast-in-place layer template 2 includes a template Ⅰ2-1, a template Ⅱ2-2 arranged at both ends of the template Ⅰ2-1, and a bolt mounting hole Ⅰ2-3 arranged at the end of the template Ⅱ2-2 away from the template Ⅰ2-1. The template Ⅰ2-1 and the template Ⅱ2-1 are vertically arranged, and the template Ⅱ2-2 passes through the mounting holes Ⅳ3-8 on two adjacent assembled columns 3 and is arranged on the side of the mounting plate 3-6. The fixing bolts Ⅱ7 pass through the mounting holes Ⅲ3-7 and the bolt mounting holes Ⅰ2-3 to fix the bridge deck cast-in-place layer template 2 and the assembled columns 3.

[0032] Furthermore, the mounting hole III3-7, the bolt mounting hole I2-3, the mounting hole IV3-8, and the cross-connecting pipe mounting hole 4-2 are all strip holes. The mounting hole III3-7 and the bolt mounting hole I2-3 can adjust the extension length of the bridge deck cast-in-place layer template 2. The setting of the cross-connecting pipe mounting hole 4-2 facilitates the connection between the cross-connecting pipe 4 and the connecting plate 3-2. The mounting hole IV3-8 facilitates the insertion and installation of the bridge deck cast-in-place layer template 2.

[0033] Furthermore, the mounting hole I3-3 is a strip hole or a circular hole, and when it is a strip hole, the distance between adjacent assembly columns 3 can be adjusted.

[0034] The preferred embodiments of the present invention are described above. It should be pointed out that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures not described in detail should be understood to be implemented in a common manner in the art; any simple modifications, equivalent changes and modifications made to the above embodiments by any technician familiar with the art based on the technical essence of the present invention without departing from the scope of the technical solution of the present invention, shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A temporary assembled guardrail for a bridge to be expanded, raised and widened, characterized in that: It includes embedded anchors, assembled columns, cross-connecting pipes, anti-collision casings, cast-in-place formwork for bridge decks, fixing bolts I, fixing bolts II, fixing bolts III, and fixing bolts IV. The embedded anchors are fixed on the top flange of the beam. The bottom of the assembled column and the embedded anchors are fixedly connected by fixing bolts III. The cross-connecting pipe is arranged between two adjacent assembled columns and fixed by fixing bolts IV. The anti-collision casing is arranged in the middle of the side of the assembled column close to the bridge deck and fixedly connected by fixing bolts I. The cast-in-place formwork for the bridge deck is fixedly arranged at the bottom of the side of the assembled column close to the bridge deck by fixing bolts II. The embedded anchors include anchor plates, multiple connection holes, and sleeves with the same number and size as the connection holes. The connection holes are evenly penetrated and arranged on the anchor plates. The plate, the sleeve extends downward through the connecting hole, and the sleeve is provided with an internal thread; the number of the connecting holes on each anchor plate is at least 4; the assembled column includes a column body, a connecting plate arranged in the middle of the column body, and a bottom plate arranged at the bottom of the column body, the column body is an H-shaped structure composed of a horizontal plate and two longitudinal plates, the connecting plate is provided with a mounting hole I, the bottom plate is provided with a mounting hole II, the mounting hole II corresponds to the number and position of the connecting holes, the fixing bolt III passes through the mounting hole II and the sleeve in sequence to fix the assembled column and the embedded anchor, the middle of the bottom plate is provided with a mounting plate, the mounting plate is provided with a mounting hole III, and the bottom of the longitudinal plate of the column body close to the bridge deck is provided with a mounting hole IV The column body is provided with a bolt mounting hole II in the middle of the longitudinal plate near the bridge deck; the number of the mounting holes IV of the same assembled column is 2; 3 connecting plates are provided on both sides of the transverse plate of the assembled column, and the number of cross-connecting tubes between two adjacent assembled columns is 3; the cross-connecting tube includes a cross-connecting tube body, cross-connecting tube mounting holes arranged horizontally at both ends of the cross-connecting tube body, and bolt mounting holes III arranged vertically at both ends of the cross-connecting tube body. The two ends of the cross-connecting tube body are clamped on the connecting plate of the assembled column through the cross-connecting tube mounting holes, and the fixing bolts IV pass through the bolt mounting holes III to fix the cross-connecting tube and the connecting plate; the anti-collision casing includes a casing body, a casing connecting plate, and a casing fixing plate. The casing body is an arc-shaped structure, which can reduce impact force and improve anti-collision. Collision performance, one end of the casing connecting plate is connected to the casing body, the casing fixing plate is arranged at the other end of the casing connecting plate, the casing fixing plate and the casing connecting plate are arranged vertically, and a plurality of bolt mounting holes IV are arranged on the casing fixing plate, and the fixing bolts I pass through the bolt mounting holes IV and the bolt mounting holes II to connect and fix the anti-collision casing and the assembled columns; the bridge deck cast-in-place layer template includes template I, template II arranged at both ends of template I, and bolt mounting hole I arranged at one end of template II away from template I, the template I and template II are arranged vertically, the template II passes through the mounting holes IV on two adjacent assembled columns and is arranged on the side of the mounting plate, and the fixing bolts II pass through the mounting holes III and the bolt mounting holes I to fix the bridge deck cast-in-place layer template and the assembled columns.

2. The temporary assembled guardrail for the bridge reconstruction, expansion, elevation and widening according to claim 1 is characterized in that: The mounting hole III, the bolt mounting hole I, the mounting hole IV, and the cross-connecting pipe mounting hole are all strip-shaped holes, and the mounting hole I is a strip-shaped hole or a circular hole.

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